API method to use: validate_telephone
Check a phone number against the official list of valid telephone number ranges.
Help your visitors avoid typing errors when entering their phone number. Once a number is entered it can be checked against the official list of valid telephone number ranges and invalid numbers can be flagged up.
Ensure your visitors are not entering false information on your website. Some visitors may attempt to provide you with an incorrect phone number in order to conceal their identity. By using our phone number validation service, invalid numbers can be immediately identified, allowing you to request the correct information.